2024知到答案 水质工程学 完整智慧树网课章节测试答案
第一章 单元测试
1、多选题：
The challenges of urban water resources include ( ).
选项：
A:High risk of urban water pollution.
B:The standards of urban water quality are high due to the increasing concerns about the safety of urban water sources.
C:Capital and operational costs of water supply for long distance transportation are high.
D:Urban water distribution renders large energy consumption.
答案: 【High risk of urban water pollution.;
The standards of urban water quality are high due to the increasing concerns about the safety of urban water sources. ;
Capital and operational costs of water supply for long distance transportation are high.;
Urban water distribution renders large energy consumption.】
2、判断题：
It is relatively hard to separate salt from water, because ions such as Ca2+，Mg2+，K+are tightly surrounded by water molecules.
选项：
A:错
B:对
答案: 【对】
3、判断题：
Lakes and reservoir waters usually have low water mobility, high turbidity, and relatively stable water quality. ( )
选项：
A:错
B:对
答案: 【错】
4、判断题：
Heavy metals can be concentrated in plant roots or aquatic animals, causing great danger to living organisms. ( )
选项：
A:对
B:错
答案: 【对】
5、判断题：
In the US, different sewage plants follow the same discharge standards. ( )
选项：
A:对
B:错
答案: 【错】
第二章 单元测试
1、判断题：
Increasing ionic strength would compress the electric double layer and increase the stability of the colloid. ( )
选项：
A:错
B:对
答案: 【错】
2、判断题：
G value and GT value are employed to design coagulation tanks, because they can describe the coagulation process comprehensively. ( )
选项：
A:错
B:对
答案: 【错】
3、判断题：
The hydraulic condition of the rotary baffle plate flocculation tank is better than that of the reciprocating type, and head loss of the rotary type is 40% less than that of the reciprocating type. ( )
选项：
A:对
B:错
答案: 【对】
4、多选题：
There are many ways for the control of coagulant dosage and automatic detection, including ( ).
选项：
A:streaming current detector (SCD)
B:establishing a mathematical model according to the quantity and quality of raw water
C:light transmission pulsation detector
D:dosing according to experience
答案: 【streaming current detector (SCD);
establishing a mathematical model according to the quantity and quality of raw water;
light transmission pulsation detector】
5、单选题：
Which one below belongs to organic coagulant ( ).
选项：
A:lime glue
B:polyacrylamide (PAM)
C:poly aluminum chloride (PAC)
D:aluminum sulfate
答案: 【polyacrylamide (PAM)】